Portal 2 Price History and Player Count

Portal 2 achievements

Portal 2 has 51 Steam achievements. On average a player has unlocked 24.1% of them; the rarest, Still Alive, is held by 2.4% of players.

• Wake Up CallSurvive the manual override74.0%
• You MonsterReunite with GLaDOS64.7%
• UndiscouragedComplete the first Thermal Discouragement Beam test62.6%
• High FiveCelebrate your cooperative calibration success58.5%
• Bridge Over Troubling WaterComplete the first Hard Light Bridge test53.2%
• Team BuildingComplete all test chambers in the Team Building co-op course49.4%
• SaBOTourMake a break for it46.5%
• Stalemate AssociatePress the button!45.5%
• Vertically UnchallengedMaster the Repulsion Gel42.8%
• Tater ToteCarry science forward40.9%
• Confidence BuildingComplete all test chambers in the Mass and Velocity co-op course40.9%
• Stranger Than FrictionMaster the Propulsion Gel39.3%
• White OutComplete the first Conversion Gel test38.2%
• Dual Pit ExperimentDo the same test twice36.9%
• Tunnel of FunnelMaster the Excursion Funnel35.1%
• Scanned AloneStand in a defective turret detector34.7%
• The Part Where He Kills YouThis is that part34.4%
• LunacyThat just happened34.1%
• Air ShowPerform 2 aerial gestures before touching the ground in co-op33.2%
• Bridge BuildingComplete all test chambers in the Hard-Light Surfaces co-op course32.0%
• No Hard FeelingsSave a turret from redemption31.0%
• Drop BoxPlace a cube on a button without touching the cube28.9%
• Good ListenerTake GLaDOS' escape advice28.3%
• Gesticul-8Perform all 8 gestures of your own volition in co-op27.1%
• Obstacle BuildingComplete all test chambers in the Excursion Funnels co-op course26.3%
• Preservation of MassBreak the rules in Test Chamber 0724.4%
• You Saved ScienceComplete all test chambers in all courses of co-op21.2%
• Portrait of a LadyFind a hidden portrait11.6%
• Ship OverboardDiscover the missing experiment10.7%
• Can't Touch ThisDance in front of a turret blocked by a hard light bridge in co-op9.8%
• Rock Portal ScissorsWin 3 co-op games of rock-paper-scissors in a row9.8%
• Asking for TroubleTaunt GLaDOS in front of a camera in each of the five co-op courses8.9%
• PturretdactylUse an Aerial Faith Plate to launch a turret8.7%
• Pit BossShow that pit who's boss7.9%
• Door PrizeExamine all the vitrified test chamber doors7.2%
• Schrodinger's CatchCatch a blue-painted box before it touches the ground6.9%
• Four Ring CircusEnter 4 different portals without touching the ground in co-op6.8%
• You Made Your PointRefuse to solve the first test in Chapter 86.5%
• Professor PortalAfter completing co-op, complete Calibration Course online with a friend who hasn’t played before5.9%
• Narbacular DropPlace a portal under your co-op partner while they are gesturing5.8%
• Final TransmissionFind the hidden signal in one of the Rat Man's dens5.4%
• Empty GestureDrop your co-op partner in goo while they are gesturing by removing the bridge under them4.6%
• Friends List With BenefitsWhile playing co-op, hug 3 different people on your friends list4.5%
• OverclockerComplete Test Chamber 10 in 70 seconds4.0%
• Smash TVBreak 11 test chamber monitors3.7%
• Iron GripNever lose a cube in Chamber 6 of the Mass and Velocity co-op course3.6%
• Party of ThreeFind the hidden companion cube in co-op test chamber3.5%
• Triple CrownSolve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each3.0%
• Portal Conservation SocietyComplete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements2.8%
• Talent ShowNever lose a cube in Chamber 6 of the Mobility Gels co-op course2.7%
• Still AliveComplete Course 4 with neither you nor your co-op partner dying2.4%

Global unlock rates from Steam, most common first.